Tapped turbine.



H. JOOS.

TAPPED TURBINE.

APPLIGATION FILED Nov. e. 1912.

Patented Apr. 21, 1914,

Witnesses I 5 lInvent-,on

Hrmann Joos.

HERMANN JOOS, 0F BERLIN, GERMANY, ASSIGNQR T() ffl-Wi A CORORATIGN QF NEW Terran Tunisian] Application led November 8, 15H2. Sera No, TEG,

To all fro/1.0m, it may concern.

Be it known that I, HERMANN Joos, a citizen of the Swiss Republic, residing at Berlin, Germany, have invented certain new and .useful Improvements in Tapped Turbines, of which the following is spccitication. l

' This invention relates to elastic fluid turbines in which provision is made for 'drawing off a portion of the steam after it has passed one or more high pressure stages, and utilizing it forheating or other industriai purposes. It is customary to regulate the admission of steam to the turbine by a speed- 'responsive device in .accordance with the .variations in load.

My invention has for its object the additional regulation ot' the admissioirof such. steam in accordance. with the variations in the consumption of steam for heating.

The essential features of construction and imode of operation are hereinafter set fertbl and particularly pointed out in the appended claim y In the accompanying drawing, Figure 1 is a somewhat diagrammatic representation 'of a tapped turbine embodying my invention, the important parts being shown in section, and Fig. Q is a section of the pilotvalve and sleeve for the throttle valve motor.

Through the casing l of the turbine runs the shaft 2, carrying the high pressure bucket wheel 3 and also low ,pressure wheels a, of which one-is shown. Steam is admitted to the high pressure stage through one or more nozzles 5,' and to the lowv pressuie stage through nozzles G. The high Dressure steam is conveyed to the machine byle main and its flow is controlled by a y,suitable regulator, such as a balanced throttle valve S, the aniountci" whose opening is regulated by a speed governor S) through lever 10 which operates the pilot valve 11 of a hydraulic motor whose piston 12 is connected to the stem of the throttle valve. The admision of steam from the high pressure stage chamber 13 to the low pressure nor/.- zles is controlled by a balanced overflow valve 14, whose stem is connected to the piston of a hydraulic motor 15 having a pilot valve 16 actuated by a movable abutment, preferably a Weighted piston 17.

The conduit 1S for leading oit the heating steam opens from the chamber 13, and a pipe 19 runs from said conduit to the mov- Specificaton of Le abie abutment l?, closiu'" of the oveiuow if pre.

coiliduit, 1 tue section Q0 having a. constriction 'e' scthat said section constitutes a Venturi t ce. A pipe 22 runs from this constriction, or throat., to the underside of a Weighted piston 23, whose upper side is subjected tothe stage pressure in the chamber 13 by means of a. pipe 21e The piston '123 is connecte by a .lever 25 with a slee e 26 inclosing the pilot valveft and con the mid-position of sai are ciosed, so that. ne iiui the Wider porte above and` bei steam consumed ir tl-e than tq tails.

suife in the 'i The cor motor 15 Tlils pro j chamber thr'ou ln accordance x nessure" in Vennrri uv causo a atie between highv pressure L, and the low pressure pipe-2li. This prcsnire difference nio f piston 23 downward which y ills the sleeve S26 upward and r A.nit .duid pressure J open the high sure reeulator 8. thu iat with au increasing dcmaiul the overflow vaivc ,lf-tsaine time the high presure it pened, and this takes place witl'mut substantialiy affecting' the speed. governor 9. Suppose, however, that the load on the turbine is increased. governor to open the high pressure valve 8, soJ that the pressurein the. chamber increases and also in `the conduit 18, assuming no increase in the demand For industrial steam. The pressure regulator l? thereupon opens the overflow valve 14% so that the extraV steam Hows to the low pressure stage to assist in carrying the load, while the pr ssurle in the heating pipe is restored to norina at the In accordance with 'the provisions of the 'ning ports 1??. Inf ivalve, these portsy This causes the speed` iotuating the suine, fr, Speed governor een neetefi to the pilot voire of seid motor,

rive-.gulator.

,a Losses@ patent statutes, l have described the prinoff motive fluid for industrial purposes, and ineens respoi'isive to e. change in the rute o 'flow of the fluid passing through the eonduit for moiying the notion or the J.fihe combination 'with s turbine, of u regulator therefor, ai speed governor 'for controlling `the regulator, s conduit for. drawing' oli' motive iiuir1 for industrial 'purposes, and ineens responsive to a change in therate of flow of the Huid pussii'ig through theeonoluit for causing the regulator to :idinit more fluid to the turbine the rnfe oi flow through 'the conduit increases :imi suusing the regulator' to admit less luid to the turbine as the rate of flow deoreasesfsuid means noting independently of the governor. 3 The'combination with u turbine having a high pressure regulator controlled by :i speed 0overmor, of :L conduit ior drawing oli steam ro-r industriel purposes, ineens responsive to changes in the rete of iiow in suifl conduit vfor exerting an uflclitioruil `govern ing eiieet upon. Suid regulator, anti inele- :pendent ineens responsive to pressure changes of the steam ilruwn off through sui-el 'conduit for additionally eoiitr'iling the pessiige Oislesin iljirouglrtlie turbine. 4. Theeomhinstion ,with a turbine having a. 'high pressure reguislioi:g of u motor for Conduit for drawing oii' steam for industrial purposes, und Ineens responsive to changes in the rute of flow in said conduit for exerting :in eflelitionui control of smid motor.

5. rEhe combination with u turbine hsv ing u high pressure throttle valve, of e motor for actuating said waive, :i pilot vali/e 'for said motor, u regulating sleeve inelosing suirl pilot valve, u speed governor connected to seid pilot valve, u conduit for drawing oiiA steam for industriel purposesj und means responsive to the rate oli llow in ssicl oonn duit `for shifting said regulating sleeve.

6. The combination with a turbine having u high pressure `throttle valve snel un overfiow valve. to i low pressure siege., of courluit :for drawing", 'oit' steeni for industrial purposes, incl seperate devices responsive to the pressure und 'to the rate oi flow iu said `eonfluit respectively for closing the overflow vulve und. opening; the high 'pressure throttle. valve when the demand for industrial steuer increases.

v'i'. 'iheyeonihination 'with :i turbine l ravine: :i high pressure throttle valve, of :i conduit 'for (lruwiug oli' steunri'or industriel purposes, u Venturi seetion in said Conduit5 unil means responsive to pressure tliii'ereuees smid Venturi Seetion fo: regulating; the throttle vulve.

. S. The combination with :i turbine having :i high pressure 'throttle vulve, of s conduit "for drawing oli' stl.` in Jfor industrial puru poses, u. Venturi section iu sfii l conduit, :i

*1i-.eil piston eontroliing seid. throttle. mi and pipes running to oppoite sif oi. ssiil piston -lfroxn regions oif for ,ure eli ference in suirl `Venturi section.

in witness hereof7 I have hereunto set my henri this 4th dej-,f ou etoher, i912.-

Hm' i: Y i leerer.. 

